<!doctype html>
<meta charset=utf-8>
<title>window.open() with "noopener" tests</title>

<meta name="variant" content="?indexed">
<meta name="variant" content="?_self">
<meta name="variant" content="?_parent">
<meta name="variant" content="?_top">
<meta name=timeout content=long>

<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
var testData = [
  { testDescription: "window.open() with 'noopener' should reuse existing target",
    secondWindowFeatureString: "noopener",
    shouldReturnWindow: false },
  { testDescription: "noopener=1 means the same as noopener",
    secondWindowFeatureString: "noopener=1",
    shouldReturnWindow: false },
  { testDescription: "noopener=0 means lack of noopener",
    secondWindowFeatureString: "noopener=0",
    shouldReturnWindow: true },
  { testDescription: "noopener separated only by spaces should work",
    secondWindowFeatureString: "make me noopener",
    shouldReturnWindow: false },
  { testDescription: "Trailing noopener should work",
    secondWindowFeatureString: "abc def,  \n\r noopener",
    shouldReturnWindow: false },
  { testDescription: "Leading noopener should work",
    secondWindowFeatureString: "noopener \f\t , hey, there",
    shouldReturnWindow: false },
  { testDescription: "Interior noopener should work",
    secondWindowFeatureString: "and now, noopener   , hey, there",
    shouldReturnWindow: false },
  { testDescription: "noreferrer should also suppress opener when reusing existing target",
    secondWindowFeatureString: "noreferrer",
    shouldReturnWindow: false },
];

/**
 * Loop over our testData array and kick off an async test for each entry.  Each
 * async test opens a window using window.open() with some per-test unique name,
 * then tries to do a second window.open() call with the same name and the
 * test-specific feature string.  It then checks whether that second
 * window.open() call reuses the existing window, whether the return value of
 * the second window.open() call is correct (it should be null in the noopener
 * cases and non-null in the cases when the existing window gets reused) and so
 * forth.
 */
function indexedTests() {
  var tests = [];
  for(var i = 0; i < testData.length; ++i) {
    var test = testData[i];
    var t = async_test(test.testDescription);
    tests.push(t);
    t.secondWindowFeatureString = test.secondWindowFeatureString;
    t.windowName = "someuniquename" + i;

    if (test.shouldReturnWindow) {
      t.step(function() {
        var windowName = this.windowName;

        var w1 = window.open("", windowName);
        this.add_cleanup(function() { w1.close(); });

        assert_equals(w1.opener, window);

        var w2 = window.open("", windowName, this.secondWindowFeatureString);
        assert_equals(w2, w1);
        assert_equals(w2.opener, w1.opener);
        assert_equals(w2.opener, window);
        this.done();
      });
    } else {
      t.step(function() {
        var w1;
        this.add_cleanup(function() {
          w1.close();
          channel.postMessage(null);
        });

        var windowName = this.windowName;
        var channel = new BroadcastChannel(windowName);

        channel.onmessage = this.step_func_done(function(e) {
          var data = e.data;
          assert_equals(data.name, windowName, "Should have the right name");
          assert_equals(data.haveOpener, true, "Should still have opener");
          assert_equals(w1.opener, window);
          assert_not_equals(w1.location.href, "about:blank", "Should have navigated");
        });

        w1 = window.open("", windowName);
        assert_equals(w1.opener, window);

        var w2 = window.open("support/noopener-target.html?" + windowName,
                            windowName, this.secondWindowFeatureString);
        assert_equals(w2, null);

        assert_equals(w1.opener, window);
      });
    }
  }
}

/**
 * Loop over the special targets that ignore noopener and check that doing a
 * window.open() with those targets correctly reuses the existing window.
 */
function specialTargetTest(target) {
  if (["_self", "_parent", "_top"].includes(target)) {
    var t = async_test("noopener window.open targeting " + target);
    t.openedWindow = window.open(`javascript:var w2 = window.open("", "${target}", "noopener"); this.checkValues(w2); this.close(); void(0);`);
    assert_equals(t.openedWindow.opener, window);
    t.openedWindow.checkValues = t.step_func_done(function(win) {
      assert_equals(win, this.openedWindow);
    });
  } else {
    throw 'testError: special target must be one of: _self, _parent, _top'
  }
}

/**
 * Parse the Query string, check if it matches keyword 'indexed' to run the indexed tests,
 * otherwise test it as a special target
 */
var variant = window.location.href.split("?")[1]
if(variant == "indexed") {
  indexedTests();
} else {
  specialTargetTest(variant);
}
</script>
